package ren.yale.android.cachewebview;


import android.content.Context;
import android.os.Environment;

import java.io.File;
import java.math.BigDecimal;

/**
 * Created by jambestwick on 2016/8/16.
 */
public class DataCleanManager {

    /**
     * 获取缓存大小
     *
     * @param context
     * @return
     * @throws Exception
     */
    public static String getTotalCacheSize(Context context) {
        long cacheSize = 0;
        try {
//            cacheSize = getFolderSize(context.getCacheDir()) + getFolderSize(context.getDir("appcache",0));
            cacheSize = getFolderSize(new File(context.getCacheDir(),"cache_path_name"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return getFormatSize(cacheSize);
//        if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
//            try {
//                String fileCache = FileUtil.getExternalStorageDir() + "/" + AppUtils.getAppName();
//                cacheSize += getFolderSize(new File(fileCache));
//            } catch (Exception e) {
//                e.printStackTrace();
//            }
//            return getFormatSize(cacheSize);
//        }else {
//            try {
//                String fileCache = PathUtils.getInternalAppCachePath();
//                cacheSize += getFolderSize(new File(fileCache));
//            } catch (Exception e) {
//                e.printStackTrace();
//            }
//            return getFormatSize(cacheSize);
//        }

    }

    /**
     * 清除缓存
     *
     * @param context
     */
    public static void clearAllCache(Context context) {
        deleteDir(context.getCacheDir());
        if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
            deleteDir(context.getExternalCacheDir());
        }
    }


    public static void clearAllCacheWithAll(Context context) {
//        if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
//            String rootPath = FileUtil.getExternalStorageDir() + "/"+ AppUtils.getAppName();
//            deleteDir(new File(rootPath));
//        }else {
//            String rootPath = PathUtils.getInternalAppCachePath();
//            deleteDir(new File(rootPath));
//        }
        deleteDir(new File(context.getCacheDir().getAbsolutePath()));
        deleteDir(new File(context.getDir("appcache",0).getAbsolutePath()));
//        if (ContextCompat.checkSelfPermission(context,
//                Manifest.permission.MANAGE_EXTERNAL_STORAGE) == PermissionChecker.PERMISSION_GRANTED){
//
//        }
    }

    public static boolean deleteDir(File dir) {
        if (dir != null && dir.isDirectory()) {
            String[] children = dir.list();
            for (int i = 0; i < children.length; i++) {
                boolean success = deleteDir(new File(dir, children[i]));
                if (!success) {
                    return false;
                }
            }
        }
        return dir.delete();
    }

    // 获取文件大小
    //Context.getExternalFilesDir() --> SDCard/Android/data/你的应用的包名/files/ 目录，一般放一些长时间保存的数据
    //Context.getExternalCacheDir() --> SDCard/Android/data/你的应用包名/cache/目录，一般存放临时缓存数据
    public static long getFolderSize(File file) {
        long size = 0;
        try {
            File[] fileList = file.listFiles();
            for (int i = 0; i < fileList.length; i++) {
                // 如果下面还有文件
                if (fileList[i].isDirectory()) {
                    size = size + getFolderSize(fileList[i]);
                } else {
                    size = size + fileList[i].length();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return size;
    }

    /**
     * 格式化单位
     *
     * @param size
     * @return
     */
    public static String getFormatSize(double size) {
        double kiloByte = size / 1024;
        if (kiloByte < 1) {
//            return size + "Byte";
            return "0K";
        }

        double megaByte = kiloByte / 1024;
        if (megaByte < 1) {
            BigDecimal result1 = new BigDecimal(Double.toString(kiloByte));
            return result1.setScale(2, BigDecimal.ROUND_HALF_UP)
                    .toPlainString() + "K";
        }

        double gigaByte = megaByte / 1024;
        if (gigaByte < 1) {
            BigDecimal result2 = new BigDecimal(Double.toString(megaByte));
            return result2.setScale(2, BigDecimal.ROUND_HALF_UP)
                    .toPlainString() + "M";
        }

        double teraBytes = gigaByte / 1024;
        if (teraBytes < 1) {
            BigDecimal result3 = new BigDecimal(Double.toString(gigaByte));
            return result3.setScale(2, BigDecimal.ROUND_HALF_UP)
                    .toPlainString() + "GB";
        }
        BigDecimal result4 = new BigDecimal(teraBytes);
        return result4.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString()
                + "TB";
    }
}